Handle hub



FIG. 1 is a perspective view of the new design for a handle hub;

FIG. 2 is a front elevational view of the new design for a handle hub;

FIG. 3 is a top plan view of the new design for a handle hub;

FIG. 4 is a bottom plan view of the new design for a handle hub;

FIG. 5 is a right side elevational view of the new design for a handle hub, the left side elevational view being a mirror image; and,

FIG. 6 is a rear elevational view of the new design for a handle hub.

The broken lines in the Figures are for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a handle hub, as shown and described. 